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sys	[ DIR ]	drwxr-xr-x	2021-11-01 09:20
vendor_perl	[ DIR ]	drwxr-xr-x	2022-02-05 08:35
B.pm	26.59 KB	-rw-r--r--	2021-02-02 16:32
Config.pm	3.02 KB	-rw-r--r--	2021-02-02 16:32
Config.pod	226.61 KB	-rw-r--r--	2021-02-02 16:32
Config_git.pl	409 B	-rw-r--r--	2021-02-02 16:32
Config_heavy.pl	46.6 KB	-rw-r--r--	2021-02-02 16:32
DynaLoader.pm	24.36 KB	-rw-r--r--	2021-02-02 16:32
Errno.pm	6.35 KB	-rw-r--r--	2021-02-02 16:32
Fcntl.pm	3.83 KB	-rw-r--r--	2021-02-02 16:32
GDBM_File.pm	1.51 KB	-rw-r--r--	2021-02-02 16:32
IO.pm	1.37 KB	-rw-r--r--	2021-02-02 16:32
NDBM_File.pm	2.44 KB	-rw-r--r--	2021-02-02 16:32
O.pm	4.11 KB	-rw-r--r--	2021-02-02 16:32
ODBM_File.pm	2.33 KB	-rw-r--r--	2021-02-02 16:32
Opcode.pm	15.24 KB	-rw-r--r--	2021-02-02 16:32
POSIX.pm	16.25 KB	-rw-r--r--	2021-02-02 16:32
POSIX.pod	57.81 KB	-rw-r--r--	2021-02-02 16:32
SDBM_File.pm	2.44 KB	-rw-r--r--	2021-02-02 16:32
_h2ph_pre.ph	19.85 KB	-rw-r--r--	2021-02-02 16:32
arybase.pm	2.76 KB	-rw-r--r--	2021-02-02 16:32
attributes.pm	14.88 KB	-rw-r--r--	2021-02-02 16:32
endian.ph	4.22 KB	-rw-r--r--	2021-02-02 16:33
features.ph	11.74 KB	-rw-r--r--	2021-02-02 16:33
lib.pm	5.87 KB	-rw-r--r--	2021-02-02 16:32
mro.pm	9.85 KB	-rw-r--r--	2021-02-02 16:32
ops.pm	997 B	-rw-r--r--	2021-02-02 16:32
re.pm	17.09 KB	-rw-r--r--	2021-02-02 16:32
signal.ph	3.42 KB	-rw-r--r--	2021-02-02 16:33
stdarg.ph	2.78 KB	-rw-r--r--	2021-02-02 16:32
stdc-predef.ph	499 B	-rw-r--r--	2021-02-02 16:33
stddef.ph	11.91 KB	-rw-r--r--	2021-02-02 16:33
syscall.ph	86 B	-rw-r--r--	2021-02-02 16:32
syslimits.ph	452 B	-rw-r--r--	2021-02-02 16:32
syslog.ph	85 B	-rw-r--r--	2021-02-02 16:32
time.ph	3.37 KB	-rw-r--r--	2021-02-02 16:33
wait.ph	83 B	-rw-r--r--	2021-02-02 16:33
xlocale.ph	156 B	-rw-r--r--	2021-02-02 16:33

Rename

package NDBM_File;

use strict;
use warnings;

require Tie::Hash;
require XSLoader;

our @ISA = qw(Tie::Hash);
our $VERSION = "1.12";

XSLoader::load();

__END__

=head1 NAME

NDBM_File - Tied access to ndbm files

=head1 SYNOPSIS

use Fcntl;   # For O_RDWR, O_CREAT, etc.
  use NDBM_File;

tie(%h, 'NDBM_File', 'filename', O_RDWR|O_CREAT, 0666)
    or die "Couldn't tie NDBM file 'filename': $!; aborting";

# Now read and change the hash
  $h{newkey} = newvalue;
  print $h{oldkey};
  ...

untie %h;

=head1 DESCRIPTION

C<NDBM_File> establishes a connection between a Perl hash variable and
a file in NDBM_File format;.  You can manipulate the data in the file
just as if it were in a Perl hash, but when your program exits, the
data will remain in the file, to be used the next time your program
runs.

Use C<NDBM_File> with the Perl built-in C<tie> function to establish
the connection between the variable and the file.  The arguments to
C<tie> should be:

=over 4

=item 1.

The hash variable you want to tie.

=item 2.

The string C<"NDBM_File">.  (Ths tells Perl to use the C<NDBM_File>
package to perform the functions of the hash.)

=item 3.

The name of the file you want to tie to the hash.

=item 4.

Flags.  Use one of:

=over 2

=item C<O_RDONLY>

Read-only access to the data in the file.

=item C<O_WRONLY>

Write-only access to the data in the file.

=item C<O_RDWR>

Both read and write access.

=back

If you want to create the file if it does not exist, add C<O_CREAT> to
any of these, as in the example.  If you omit C<O_CREAT> and the file
does not already exist, the C<tie> call will fail.

=item 5.

The default permissions to use if a new file is created.  The actual
permissions will be modified by the user's umask, so you should
probably use 0666 here. (See L<perlfunc/umask>.)

=back

=head1 DIAGNOSTICS

On failure, the C<tie> call returns an undefined value and probably
sets C<$!> to contain the reason the file could not be tied.

=head2 C<ndbm store returned -1, errno 22, key "..." at ...>

This warning is emitted when you try to store a key or a value that
is too long.  It means that the change was not recorded in the
database.  See BUGS AND WARNINGS below.

=head1 BUGS AND WARNINGS

There are a number of limits on the size of the data that you can
store in the NDBM file.  The most important is that the length of a
key, plus the length of its associated value, may not exceed 1008
bytes.

See L<perlfunc/tie>, L<perldbmfilter>, L<Fcntl>

=cut